==== '''With 16GB EMMC Version''' ====

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==== '''Without 16GB EMMC Version''' ====

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== '''Introduction to the use of the development board''' ==

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1)TF card, a high-speed card of class 10 or higher with a minimum capacity of 8GB, it is recommended to use SanDisk TF card, Orange Pi test is to use SanDisk TF card, other brands of TF card may have the problem of system failure

2)TF card reader, used to read and write TF card

3)HDMI to HDMI cable, used to connect the development board to an HDMI monitor or TV for display

4)Type-C to HDMI cable, connect the development board to the HDMI monitor or TV through the Type-C interface for display

5)Type-C to USB3.0 adapter, used to connect USB3.0 storage devices or mouse keyboards and other devices

6)10.1 inch MIPI screen, used to display the system interface of the development board

7)Power adapter, 5V/3A or 5V/4A high-quality power adapter, the Type-C USB3.0 interface of the development board can also be used for power input

[[File:Orange-pi-4-img11.png|300px|]]

[[File:Orange-pi-4-img12.png|300px|]]

10)OV13850 13 million camera, Orange Pi 4 dedicated camera, compatible with MIPI interface<br>

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11)USB to TTL module and DuPont cable. When using the serial port debugging function, USB to TTL module and DuPont cable are required to connect the development board and the computer

[[File:Orange-pi-4-img14.png|300px|]]

[[File:Orange-pi-4-img15.png|300px|]]

c.If the computer only has a TF card inserted, the “Select card” column will display the drive letter of the TF card. If multiple USB storage devices are inserted into the computer, you can select the drive letter corresponding to the TF card through the drop-down box<br>

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d.Then click "Format", a warning box will pop up before formatting, and formatting will start after selecting "Yes (Y)"<br>

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e.After formatting the TF card, the message shown in the figure below will pop up, click OK<br>

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4)After entering the balenaEtcher download page, please select the Linux version of the software through the drop-down box to download<br>

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5)After downloading, use '''unzip''' to decompress. The decompressed '''balenaEtcher-1.5.109-x64.AppImage''' is the software needed to burn Linux image

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9)The writing speed and remaining time will be prompted during the burning process

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10)After burning, the following interface will be displayed. At this time, you can unplug the TF card from the computer and insert it into the development board to start.

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=== '''Method of flashing Linux image to eMMC''' ===

6)After opening '''SDDiskTool''', if the TF card is recognized normally, the inserted disk device will be displayed in '''"Select Removable Disk Device"'''. <span style="color:red;">Please make sure that the displayed disk device is consistent with the drive letter of the TF card you want to burn</span>. If there is no display, you can try to unplug the TF card<br>

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7)Then start to write the Android firmware to the TF card<br>

c. Finally, click the '''"Start to create"''' button to start burning the Android image to the TF card

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8) After burning, you can exit SDDiskTool, and then you can unplug the TF card from the computer and insert it into the development board to start.<br>

3)After decompressing the '''DriverAssitant_v4.6''' installation package, click the '''DriverInstall.exe''' program to start installing Rockchip Microdrive<br>

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4)The steps to install Rockchip Microdrive are as follows<br>

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5)Then connect the DC power adapter to the OrangePi 4, and then connect the OrangePi 4 to the Windows PC through the Type-C data cable<br>

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5)After opening '''SDDiskTool''', if the TF card is recognized normally, the inserted disk device will be displayed in "Select Removable Disk Device". <span style="color:red;">Please make sure that the displayed disk device is consistent with the drive letter of the TF card you want to burn</span>. If there is no display, you can try to unplug and insert the TF card

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6)Then start to write the Android firmware to the TF card

c. Finally, click the "Start Create" button to start burning

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7) After burning, you can exit SDDiskTool, and then you can unplug the TF card from the computer and insert it into the development board. The boot will start to burn the Android image in TF to EMMC.<br>

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8)If the development board is connected to an HDMI display, you can also see the progress bar of burning Android image to EMMC from the HDMI display

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9)When the following message is displayed, it means that burning the Android image to EMMC is complete, and you can pull out the TF card at this time, and then the system will start to boot

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=== '''Method to burn Android image to EMMC based on Ubuntu PC''' ===

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1)First, you need to prepare a USB to TTL module. For better platform compatibility, CH340 USB to TTL module is recommended. Then insert one end of the USB interface of the USB to TTL module into the USB interface of the computer

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2)The corresponding relationship between the debug serial port GND, TX and RX pins of the development board is shown in the figure below

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3)The GND, TX and RX pins of the USB to TTL module need to be connected to the debug serial port of the development board through a Dupont cable

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5)After executing the putty command, the following interface will pop up

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6)First select the setting interface of the serial port

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7)Then set the parameters of the serial port

c. Set Flow control to None

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8)After setting the serial port setting interface, return to the Session interface

b. Then click the Open button to connect to the serial port

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9)After starting the development board, you can see the Log information output by the system from the opened serial port terminal

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==== '''How to use the debug serial port on Windows platform''' ====